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water may have a density much greater than 0.99... was: Re: ml and cm^3



Maybe ice is not water, but since ice is rather fluffy, under pressure its
density will increase much, e.g. ~ 45%. check out:
http://www.cmmp.ucl.ac.uk/people/finney/soi.html

"At present, ice XII is the densest known phase of the water substance
without interpenetration. Yet in all these structures the non-bonded
repulsive constraints are active and confirmed by our neutron results."

bc

Michael Edmiston wrote:

Robert Cohen asks, "Isn't 1 ml equivalent to 1 cm^3? Isn't g/ml
equivalent to g/cm^3?"

I think it depends upon whom you ask. Now that we have a meter (and
from that, centimeter) defined by light, it turns out that 1 cm^3 of
water, at water's maximum density (at 3.98 Celsius) is not exactly one;
rather, it is 0.999972 g/cm^3. Therefore, water never gets more dense
than this, i.e. it never reaches exactly one.

cut